I don't think the layout or design of the forums is the problem. It's just that nobody talks anymore, which is sad, because we used to have hundreds of active forum posters, and I remember wanting to be "well known" when I first joined, and now.. I am pretty much one of the only ones left. And I post probably once every two weeks, if even.
I am not sure how the community part can be increased, our community was strong in the first place, because a lot of the TV Tome/TV.com crowd came over here, and for the most part, that's who was the main posters. But one by one, people would fade away.